Keyless lock.



S. TADAKUMA.

KEYLESS LOCK.

APPLICATION FILED 1uLY19. 1915.

1,16?,78? Patented Jan. 11, 1916.

TREE. 1.* L

By k i UNITED STATES SEIZI TADAKUMA, OF PORTLAND, OREGON.

KEYLESS LOCK.

Application filed .Tuly 19, 1915.

To all whom t may concern:

Be it known that I, SEIZI TADAKUMA, a subject of the Emperor of Japan,at present residing at Portland, in the county of Multnomah and State ofOregon, have invented certain .new and useful Improvements in KeylessLocks, of which the following is a specification.

My invention relates to the class of locks and it more particularlybelongs to that class embodying permutative or selective mechanismdesigned to be unlocked by projections or push buttons or plates in lieuof a key.

rIhe present invention provides a pad lock, the shackle of which isprovided with reversible lock plates, by means of which the combinationmay be changed at will, each lock plate coperating with a sliding lockbar in the body ofthe lock to secure the same, the several lock barsbeing operated by releasing levers and push buttons or plates, therebeing one set of lock bars, releasing levers and push plates for eachlock plate. The shackle is also provided with a holding notch wherebythe operation of an inactive set will result in the lock bar of that setentering the notch and prevent the release of the shackle.

In its more subordinate nature, the invention includes those noveldetails of construction, combination and arrangement of parts, all ofwhich will be first fully described, then be specifically pointed out inthe appended claims, and illustrated in the accompanying drawings, inwhich:

Figure 1 is a perspective view of the lock. Fig. 2 is a perspective viewof the shackle. Fig. 3 is a longitudinal section, the cutting planelying just above the operative mechanism for section four of themechanism. Fig. 4 is a view similar to Fig. 3, the cutting plane beingtaken just above the operative mechanism of section three. Fig. 5 is aview similar to Fig. 4, the cutting plane being taken just above theoperating mechanism of section two. Fig. 6 is a view similar to Fig. 5,the cutting plane being taken just above the operating mechanism ofsection one. Fig. 7 is a view similar to Fig. 3, showing the position ofthe parts when section four is an inoperative section and the push platethereof has been forced inwardly. Fig. 8 is a cross section an the line8--8 of Fig. 3. Fig.. 9

Specification of Letters Patent.

'alining with one another.

Patented Jan. 11, 1916.

Serial No. 40,606.

is a detail perspective view of the plate in which the works of the lockare mounted.

In the drawing, in which like numerals of reference indicate like partsin all of the figures, 1 represents the shackle whose arm 2 is notchedat 3 to provide a holding recess for the entrance of the several lockbars that may be adjusted to an inoperative relationship with the lockplates 7.

The arm 4 of the shackle is recessed at 5 and provided with an elongatedflat pin 6 to receive the lock plates 7, there being as many lock platesas there are sets of locking devices in the lock body. Each lock plate 7comprises a locking notch 8 and a releasing notch 9 along one edge andan idling notch 10 on the other edge, the notches 8 all being preferablyin the same position, while the notches 9 are varied in their location,dependent on the location and arc of movement of the particularreleasing lever end with which the same cooperates.

The lock body 11 has a bottom plate 12 that is provided with a series ofslots 13 for the push buttons or plates 37 to project through, and thetop has openings 14 and 15 to receive the shackle arms 2 and 4.

16 represents the base plate that supports the works of the lock, whichplate is inserted in `the casing body 11 and is held centered by lugs onits upper flange 19, as indicated in Fig. 5. The base plate 16 has aliange 17 at one side having an opening 18 and provided with, aninturned guide 22. It also has a flange 19 at the top which is open at2O and has an abutment projection 21, as best shown in Fig. 9.

The flange 19 is cut or bent to form an end flange 23 and an inwardlyprojecting guide 24, the guides 22 and 24 preferably The plate 16 isalso provided with pivot pins 26 and guide pins 25, there being one setof pins foreach set of locking devices.

Each set of locking devices comprises a lock bar 27 slotted at 28 and 30to receive the guides 24 and 22 respectively, and provided with lockingends 29 and restraining locking ends 39 at the other end.

Each lock bar is normally projected in the same direction (to thelocking position) by a spring 40. Each lock bar 27 also has a shoulder31 to be engaged by the abutment 32 of a releasing lever 33 which ispivoted on the particular stud or pin 26,

and the free ends of the levers'BB lie normally projecting in therecesses 9 or l() of the lock plates 7, according to whether the V lockplates are in the active or inactive positions. j

The several releasing levers 33 have surfaces 35 designed to be engagedby the ends 3G of the push plates or buttons 37, each of which plates isslotted at 38 to receive the perspective guide pins The plates 37 areheld from coming out by their shoulders -which engage the bottom 12 ofthe body 11.

Iach set of locking devices is supported by a thin plate ll and theuppermost set is covered by a plate Ll2 (see Fig. 8).

In practice, when a push plateBT is moved inwardly, its end 3G willforce the releasing lever upwardly whereby the shoulder 32 will Lt'orcethe lock bar out of the lock recess 8 of the particular lock plate 7and, uponv further movement, the end 34; will engagethe shoulder at thetop of the recess 9 and force the shackle upwardly (outwardly). If thelock plate be reversed, as in Fig. 7, to exclude that set from thecombination, and the push plate o the excluded set be forced inwardly inthe attempt to open the lock, the lock bar 27 o that set will have itsend 39 forced into the notch 3 and prevent the withdrawal oi theshackle, thus tending to prevent an unauthorized opening of the lock.

It should ybe understood that as many sets of locking devices and lockplates may be used in a lock as found desirable, and in order to changethe combination it is only necessary to turn over one or more of thelock plates from the position shown in Fig. 2 to the reverse positionindicated in Fig. 7, for instance, when those particular lock plateswill be rendered inactive with relation to the locking mechanism of theparticular set or sets.

From the foregoing, it will be observed that I have provided a simpleand eifective construction of keyless lock in which pro vision is madei'or a ready change of the combinations to suit the desires of the userand provision is also made whereby when one attempts to force theopening of the lock, not knowing the combination, and presses on theinactive push plate, the result would be simply to lock the shackle moresecurely in the body of the lock.

From the foregoing, taken in connection with the accompanying drawings,it is thought the complete construction, operation and advantages of myinvention will be readily understood by those skilled in the art.

lVhat I claim is:

1. In a lock, a body and a shackle, works within saidfbody andlcomprising sets of locking mechanism each including lock bars,

releasing levers and push plates, said body havingslots through whichsaid push plates project, said shackle having notches coperative withsaid bars and levers.

In a keyless lock, a body, and a shackle adapted to project into saidbody, sets of locking mechanism including lock bars, releasing leversand push plates in said body, said shackle having lock members for saidlock bars, said shackle also having a holding notch designed to receivesaid lock bars at times, said lock members being reversible forrendering any lock bar inoperative as to said shackle bar lock members.

3. In a keyless lock, a body, works within said body, a shackle havingarms insertible into said body, one of said arms having normal locknotches, said works including sets of lock bars designed to engage saidnotches, means for holding certain o1 saidbars out of the notches andthusout of the combination"`,-means for withdrawing said lock bars fromthe notch engaging position, and means coperating with the lock bar thatis out of the combination for bringing it into locking engagement withthe shackle whenv the withdrawing means of that bar is operated.

4E. In a keyless lock, a body, a shackle adapted to be inserted intosaid body, said shackle having a recess, lock plates revers ibly mountedin said recess, said lock plates having lock notches and releasingnotches on oneedge and an idling notch on the other edge, works withinsaid body, said` works comprising a'plurality of sets of lockingmechanism, each set consisting of a lock bar, means for forcing saidlock bar into locking engagement with the lock notch of the respectivelock plate, a releasing lever having engagement with said lock bar t0withdraw the same, said releasing lever' projecting into said releasingnotch of the respective lock plate, and a push plate de signed to.engage said releasing lever, said body havingslots through which therespective pusher plates project.

5. In a keyless lock, a body, a shackle adapted to be inserted into saidbody, said shackle having a recess, lock plates reversibly mounted insaid recess, said lock plates,

having lock notches and releasing notches on one edge and anfidlingnotch on the other edge, works within said body, said works comprising aplurality of sets of locking mechanism, each set consisting of a lockbar, means for forcing said lock bar into locking engagement with thelock notch of the respective lock plate, a releasing lever havingengagement with said lock bar to withdraw the same, said releasing leverprojecting into said releasing notch of the respective lock plate, apush plate designed to engage said releasing lever, said body havingslots through which the respective push isc plates project, said shacklehaving a holding notch, said locking plates being reversible to bringthe idling notch in position to receive said releasing lever ends andhold said lock bars from locking action, said lock bar so held fromlocking action adapted to be forced into said holding notch of saidshackle when the respective push plate is operated.

6. In a lock, a body, a shackle having a pair of arms insertible intosaid body, one of said arms having a holding notch, the other of saidarms carrying a lock member having a lock notch and a releasing notch,an endvvise reciprocable lock bar mounted in said body, a spring forforcing said bar to engage said lock notch, a releasing lever withinsaid body designed to engage said lock bar to force it out of said locknotch and into said holding notch, said releasing lever having an endprojecting into said re- -With relation to said shackle holding notch.

7. In a lock, a body, a shackle having arms adapted to project into saidbody, a

locking mechanism including a reciprocating lock bar, releasing leversand push plates mounted in said body, said shackle having a lock notchand a releasing notch, means for forcing said lock bar into said locknotch, said releasing lever having engagement With said lock bar toWithdraw the same from said lock notch and projecting into saidreleasing notch to force said shackle upwardly, substantially as shownand described.

SEIZI TADAKUMA..

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents- Washington, D. C.

